Since you have essentially made your house into the board of the Clue game, I'd suggest making your guests the actual game pieces.
There are six characters, so make the characters teams and divide your guests evenly between the characters Mr. Green, Prof. Plum, Miss Scarlet, Mrs. White, Col. Mustard, and Mrs. Peacock. Give them a colored article of clothing (hat or hanky)to designate their group.
Have the three cards that designate the person, room and weapon of the murder already in sealed, labeled envelopes and prominently displayed in a central location.
Also, there should be the weapons (or at least pictures of them) in each corresponding room.
Then you, as the host (should be dressed as a domestic), spin a spinner you've made to designate which character group moves to which room to survey what weapons are there, and the game is played from there like the board game until one group figures out who-dunnit.
There are six characters, so make the characters teams and divide your guests evenly between the characters Mr. Green, Prof. Plum, Miss Scarlet, Mrs. White, Col. Mustard, and Mrs. Peacock. Give them a colored article of clothing (hat or hanky)to designate their group.
Have the three cards that designate the person, room and weapon of the murder already in sealed, labeled envelopes and prominently displayed in a central location.
Also, there should be the weapons (or at least pictures of them) in each corresponding room.
Then you, as the host (should be dressed as a domestic), spin a spinner you've made to designate which character group moves to which room to survey what weapons are there, and the game is played from there like the board game until one group figures out who-dunnit.